:root{--bg: #f2eadc;--card: #fffaf0;--surface-2: #f8f0e1;--surface-3: #efe1c9;--ink: #211a16;--ink-soft: #5a4b40;--ink-faint: #8b7b69;--basalt: #231f1b;--basalt-2: #302821;--primary: #8f2f24;--primary-deep: #661f17;--primary-tint: #ead0c8;--accent: #b9602a;--apricot: #c98432;--apricot-tint: #fff0cf;--lapis: #1f5e70;--lapis-tint: #e3eef3;--vine: #496f3d;--vine-tint: #e8f0df;--gold: #96711f;--line: #d8c9b1;--line-soft: #eadfcf;--line-strong: #b79a73;--ok-bg: #e8f0df;--bad-bg: #f7ded8;--shadow: 0 1px 0 rgba(255, 255, 255, .55), 0 8px 22px rgba(51, 36, 22, .08);--shadow-md: 0 18px 46px rgba(35, 31, 27, .18);--radius: 4px;--radius-sm: 3px;--tapestry-strip: repeating-linear-gradient(90deg, var(--primary) 0 12px, var(--apricot) 12px 24px, var(--lapis) 24px 36px, var(--vine) 36px 48px, var(--line-strong) 48px 60px);--font-ui: "Instrument Sans", system-ui, sans-serif;--font-display: "Fraunces", serif;--font-hy: "Noto Sans Armenian", "Instrument Sans", sans-serif;--font-mono: "DM Mono", monospace}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-ui);background:linear-gradient(90deg,rgba(143,47,36,.05) 1px,transparent 1px) 0 0 / 28px 28px,linear-gradient(0deg,rgba(31,94,112,.04) 1px,transparent 1px) 0 0 / 28px 28px,radial-gradient(circle at 0 0,rgba(185,96,42,.13),transparent 32%),var(--bg);color:var(--ink);font-size:15px;line-height:1.55}body:before{content:"";position:fixed;inset:0 auto 0 230px;width:10px;pointer-events:none;z-index:2;opacity:.7;background:repeating-linear-gradient(45deg,transparent 0 8px,rgba(143,47,36,.22) 8px 10px,transparent 10px 18px,rgba(31,94,112,.18) 18px 20px)}.shell,.auth-wrap{zoom:var(--ui-zoom, 1)}.hy{font-family:var(--font-hy)}::selection{background:#a83c2b2e}a{color:var(--lapis)}svg{flex-shrink:0}.shell{display:flex;min-height:100vh}.sidebar{width:230px;border-right:1px solid #3b3129;background:linear-gradient(180deg,rgba(168,58,43,.2),transparent 28%),linear-gradient(135deg,var(--basalt),var(--basalt-2));padding:20px 14px 14px;position:fixed;top:0;left:0;bottom:0;z-index:50;display:flex;flex-direction:column;overflow-y:auto}.brand{font-family:var(--font-display);font-weight:680;font-size:17px;color:#fff8ea;line-height:1.2;padding:0 8px}.brand .hy{font-size:20px;display:block;color:#f0b45e}.brand-sub{font-size:10.5px;color:#b9a58c;letter-spacing:.1em;text-transform:uppercase;margin:4px 0 18px;padding:0 8px}.nav{display:flex;flex-direction:column}.nav-group{display:flex;flex-direction:column;gap:1px;margin-bottom:14px}.nav-group-label{font-size:10.5px;font-weight:650;text-transform:uppercase;letter-spacing:.09em;color:#a8947d;padding:0 10px 4px}.nav a{display:flex;align-items:center;gap:10px;padding:7px 10px;border-radius:var(--radius-sm);text-decoration:none;color:#d7c7af;font-size:13.5px;font-weight:500;transition:background .12s,color .12s}.nav a svg{color:#a8947d}.nav a:hover{background:#fffaf014;color:#fff8ea}.nav a.active{background:#fff8ea;color:var(--primary);box-shadow:inset 3px 0 #f0b45e}.nav a.active svg{color:var(--primary)}.sidebar-account{margin-top:auto;padding-top:10px;border-top:1px solid rgba(255,250,240,.15)}.account-chip{display:flex;align-items:center;gap:9px;width:100%;padding:7px 8px;border-radius:var(--radius-sm);border:none;background:transparent;font:inherit;font-size:13px;color:#d7c7af;cursor:pointer;text-decoration:none;text-align:left}.account-chip:hover{background:#fffaf014;color:#fff8ea}.account-chip .avatar{width:26px;height:26px;border-radius:50%;background:#f0b45e;color:#fff;display:grid;place-items:center;font-weight:600;font-size:12.5px}.account-chip .who{overflow:hidden}.account-chip .who .name{font-weight:600;color:#fff8ea;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}.account-chip .who .mail{font-size:11.5px;color:#b9a58c;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.main-wrap{flex:1;min-width:0;display:flex;justify-content:center;margin-left:230px}.main{width:100%;max-width:1200px;padding:30px 38px 80px;min-width:0}.page-title{font-size:26px;font-weight:680;letter-spacing:0;line-height:1.2;margin-bottom:4px;font-family:var(--font-display)}.page-title .hy{color:var(--primary);font-weight:600;font-size:25px}.page-lede{color:var(--ink-soft);font-size:14.5px;max-width:68ch;margin-bottom:22px}.hero{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;position:relative;background:linear-gradient(135deg,rgba(168,58,43,.12) 0%,transparent 34%),linear-gradient(90deg,var(--card),#fff6e8);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden}.hero:after,.course-hero>div:first-child:after,.module-hero>div:first-child:after{content:"";position:absolute;left:0;right:0;bottom:0;height:5px;background:var(--tapestry-strip)}.hero>*{position:relative;z-index:1}.hero-left{display:flex;align-items:center;gap:18px}.hero-title{font-size:28px;font-weight:700;letter-spacing:0;line-height:1.15;font-family:var(--font-display)}.hero-title .hy{color:var(--primary);font-weight:600}.hero-sub{color:var(--ink-soft);font-size:14px;margin-top:2px}.hero-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.btn.big{font-size:15px;padding:11px 20px;border-radius:var(--radius)}.stat-strip{display:grid;grid-template-columns:repeat(6,1fr);background:#fffaf0e0;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:22px;overflow:hidden}.stat-cell{padding:13px 18px;border-right:1px solid var(--line-soft);display:flex;flex-direction:column;box-shadow:inset 0 3px #a83a2b14}.stat-cell:last-child{border-right:none}.stat-cell .n{font-size:21px;font-weight:680;letter-spacing:0;font-family:var(--font-display)}.stat-cell .n .frac{font-size:13px;font-weight:500;color:var(--ink-faint)}.stat-cell .l{font-size:11.5px;color:var(--ink-faint)}@media(max-width:1000px){.stat-strip{grid-template-columns:repeat(3,1fr)}.stat-cell:nth-child(3){border-right:none}.stat-cell{padding:10px 14px}}@media(max-width:560px){.stat-strip{grid-template-columns:repeat(2,1fr)}.stat-cell:nth-child(odd){border-right:1px solid var(--line-soft)}.stat-cell:nth-child(2n){border-right:none}}.layout-rail{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:18px;align-items:start}@media(max-width:1000px){.layout-rail{grid-template-columns:1fr}}.rail{display:flex;flex-direction:column;gap:12px}.path-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;position:relative}.path-row{display:flex;align-items:center;gap:14px;padding:13px 18px;border-bottom:1px solid var(--line-soft);text-decoration:none;color:inherit;transition:background .12s}.path-row:last-child{border-bottom:none}.path-row:hover{background:var(--surface-2)}.path-row.next{background:var(--primary-tint)}.path-row.next:hover{background:#f1e2dd}.path-row.todo{opacity:.75}.path-body{flex:1;min-width:0}.path-title{display:block;font-weight:620;font-size:14.5px}.path-sub{display:block;font-size:12.5px;color:var(--ink-faint);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.path-num{font-size:13px;font-weight:650;color:var(--ink-soft)}.ring{position:relative;display:inline-grid;place-items:center;flex-shrink:0}.ring svg{display:block}.ring-label{position:absolute;display:grid;place-items:center}h2.section-head{font-size:13px;font-weight:650;color:var(--ink);margin:28px 0 10px;padding-bottom:7px;border-bottom:1px solid var(--line-soft);display:flex;align-items:center;gap:7px;letter-spacing:0;text-transform:none}h2.section-head svg{color:var(--ink-faint)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);position:relative;overflow:hidden}.card:after,.path-card:after,.level-module:after,.module-workspace-panel:after,.reference-chapter:after,.content-tool-panel:after,.note-group:after,.dict-article-pane:after,.tutor-chat:after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--tapestry-strip);opacity:.72;pointer-events:none}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px}.tile{display:block;text-decoration:none;color:inherit;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);transition:border-color .12s,background .12s,transform .12s;text-align:left}.tile:hover{border-color:var(--primary);background:#fff6e8;transform:translateY(-1px)}.tile h3{font-size:14px;font-weight:600;margin-bottom:3px;display:flex;align-items:center;gap:7px}.tile h3 svg{color:var(--primary)}.tile .kicker{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint);letter-spacing:.04em;text-transform:uppercase}.tile p{font-size:12.5px;color:var(--ink-soft)}table.g{width:100%;border-collapse:collapse;margin:12px 0;font-size:13.5px;background:var(--card)}table.g caption{caption-side:top;text-align:left;color:var(--ink-faint);font-size:12.5px;padding-bottom:5px}table.g th{font-weight:600;font-size:12px;color:var(--ink-soft);border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;background:var(--surface-2)}table.g td{padding:8px 10px;border-bottom:1px solid var(--line-soft);vertical-align:top}table.g tr:last-child td{border-bottom:none}table.g .hy{font-size:15px}.table-scroll{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:4px 12px;margin:12px 0}.table-scroll table.g{margin:4px 0}.pattern{font-family:var(--font-mono);background:var(--lapis-tint);border:1px solid #c8d9e2;border-left:4px solid var(--lapis);padding:10px 14px;border-radius:var(--radius-sm);margin:12px 0;font-size:13.5px;color:var(--lapis)}.examples{margin:10px 0 16px;display:grid;gap:4px}.example{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:16px;padding:8px 12px;border-radius:var(--radius-sm);background:#fff6e8;border:1px solid var(--line-soft);align-items:baseline}.example .hy{font-size:15.5px}.example .en{color:var(--ink-soft);font-size:12.5px}.grammar-hero{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:14px}.grammar-hero .seg{flex-shrink:0;margin-top:4px}.bridge-label,.kicker{display:block;font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint);letter-spacing:.04em;text-transform:uppercase}.box-dot{width:10px;height:10px;border-radius:50%;background:var(--line);border:1px solid var(--card);box-shadow:0 0 0 1px var(--line);margin-top:5px;flex-shrink:0}.grammar-search{position:relative;max-width:560px;margin-bottom:16px}.grammar-search svg{position:absolute;left:11px;top:50%;transform:translateY(-50%);color:var(--ink-faint);pointer-events:none}.grammar-search .input{padding-left:34px}.tile-meta{display:flex;gap:5px;flex-wrap:wrap;margin-top:10px}.curriculum-map{margin-bottom:16px}.curriculum-map-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:9px}.curriculum-map-head h2{font-size:19px;line-height:1.2}.curriculum-levels{display:grid;gap:8px}.curriculum-level-board{border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--card);overflow:hidden;box-shadow:var(--shadow)}.curriculum-level-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 14px;cursor:pointer;list-style:none;background:linear-gradient(90deg,#fff6e8,var(--surface-2))}.curriculum-level-head::-webkit-details-marker{display:none}.curriculum-level-head:after{content:"+";width:22px;height:22px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--ink-faint);background:var(--card);font-family:var(--font-mono);font-size:14px}.curriculum-level-board[open] .curriculum-level-head{border-bottom:1px solid var(--line-soft)}.curriculum-level-board[open] .curriculum-level-head:after{content:"-"}.curriculum-level-head div{display:flex;align-items:baseline;gap:8px}.curriculum-level-head strong{font-family:var(--font-display);font-size:21px;line-height:1;color:var(--primary)}.curriculum-level-head span{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint)}.curriculum-topic-rows{display:grid;background:var(--card)}.curriculum-topic-row{display:grid;grid-template-columns:12px minmax(0,1fr) auto auto;gap:12px;align-items:center;padding:12px;border-bottom:1px solid var(--line-soft)}.curriculum-topic-row:last-child{border-bottom:none}.curriculum-stage-dot{width:9px;height:9px;border-radius:50%;border:1px solid var(--line);background:var(--surface-2)}.curriculum-topic-row.covered .curriculum-stage-dot{background:#d9c8a2;border-color:#c4ab6e}.curriculum-topic-row.read .curriculum-stage-dot{background:var(--gold);border-color:#b08c2d}.curriculum-topic-row.studying .curriculum-stage-dot{background:var(--primary);border-color:#9f392a}.curriculum-topic-row.completed .curriculum-stage-dot{background:var(--vine);border-color:#4c7138}.curriculum-topic-copy{min-width:0}.curriculum-topic-title{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.curriculum-topic-title h3{font-size:14px;line-height:1.25}.curriculum-topic-copy p{color:var(--ink-soft);font-size:12.5px;margin-top:3px;max-width:76ch}.stage-pill{justify-self:start;border:1px solid var(--line);border-radius:4px;color:var(--ink-faint);background:#fffaf0a6;padding:3px 7px;font-size:11.5px;line-height:1.2;white-space:nowrap}.stage-pill.covered{border-color:#d0b47b;background:var(--apricot-tint);color:#735319}.stage-pill.not-started{border-style:dashed;background:transparent}.stage-pill.read{border-color:#dfc274;background:var(--apricot-tint);color:#755d19}.stage-pill.studying{border-color:#d7a297;background:#fff1ed;color:var(--primary)}.stage-pill.completed{border-color:#cadfb9;background:var(--ok-bg);color:var(--vine)}.stage-controls{display:inline-flex;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;background:var(--surface-2)}.stage-controls button{min-width:72px;border:none;border-right:1px solid var(--line);background:transparent;color:var(--ink-soft);font:inherit;font-size:11.5px;font-weight:600;padding:5px 8px;cursor:pointer}.stage-controls button:last-child{border-right:none}.stage-controls button:hover:not(:disabled){background:var(--card);color:var(--ink)}.stage-controls button.active{background:var(--primary);color:#fff}.stage-controls button:disabled{opacity:.42;cursor:default}.curriculum-topic-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:6px}.chapter-num{width:38px;height:38px;border-radius:var(--radius-sm);display:grid;place-items:center;background:var(--primary);color:var(--primary);color:#fff8ea;font-family:var(--font-display);font-size:21px;font-weight:650}.chapter-body h3{font-size:15.5px;line-height:1.25;margin:1px 0 3px}.chapter-body p{color:var(--ink-soft);font-size:12.5px}.progress-track.compact{height:4px;margin:10px 0 0}.progress-track.compact .progress-fill{display:block}.grammar-detail-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin:8px 0 16px;padding-bottom:14px;border-bottom:1px solid var(--line)}.grammar-detail-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:22px;align-items:start}.grammar-toc{position:sticky;top:20px;display:flex;flex-direction:column;gap:3px}.grammar-toc a{display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:8px;align-items:center;padding:7px 9px;border-radius:var(--radius-sm);text-decoration:none;color:var(--ink-soft);font-size:12.5px}.grammar-toc a:hover{background:var(--surface-2);color:var(--ink)}.grammar-toc a.active{background:var(--primary-tint);color:var(--primary)}.grammar-toc span{width:21px;height:21px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--ink-faint);font-family:var(--font-mono);font-size:10.5px}.grammar-toc strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}.grammar-toc svg{color:var(--vine)}.grammar-content{min-width:0}.grammar-section{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:17px 18px;margin-bottom:14px;position:relative;overflow:hidden}.grammar-section:before{content:"";position:absolute;inset:0 0 auto;height:3px;background:linear-gradient(90deg,var(--primary),var(--apricot),var(--lapis));opacity:.8}.grammar-section-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding-bottom:11px;margin-bottom:12px;border-bottom:1px solid var(--line-soft)}.grammar-section-head h2{font-size:19px;line-height:1.2}.grammar-section-head p{color:var(--ink-soft);font-size:13.5px;margin-top:2px}.section-tools{display:flex;align-items:center;justify-content:flex-end;gap:7px;flex-wrap:wrap;flex-shrink:0}.reference-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:18px;align-items:start}.reference-nav{position:sticky;top:20px;display:flex;flex-direction:column;gap:3px}.reference-nav a{display:grid;grid-template-columns:24px minmax(0,1fr) auto;gap:8px;align-items:center;padding:7px 9px;border-radius:var(--radius-sm);text-decoration:none;color:var(--ink-soft);font-size:12.5px}.reference-nav a:hover{background:var(--surface-2);color:var(--ink)}.reference-nav span{width:21px;height:21px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;color:var(--ink-faint);font-family:var(--font-mono);font-size:10.5px}.reference-nav strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}.reference-nav em{color:var(--ink-faint);font-style:normal;font-family:var(--font-mono);font-size:10.5px}.reference-chapters,.reference-search-results{display:grid;gap:12px}.reference-chapter{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;position:relative;scroll-margin-top:18px}.reference-chapter-head{display:grid;grid-template-columns:44px minmax(0,1fr);gap:13px;align-items:center;padding:15px 16px;background:linear-gradient(90deg,#fff6e8,var(--surface-2));border-bottom:1px solid var(--line-soft)}.reference-chapter-head h2{font-size:17px;line-height:1.2}.reference-chapter-head p{color:var(--ink-soft);font-size:12.5px;margin-top:2px}.reference-entries{display:grid}.reference-entry{border-bottom:1px solid var(--line-soft);background:var(--card)}.reference-entry:last-child{border-bottom:none}.reference-entry summary{display:grid;grid-template-columns:44px minmax(0,1fr) auto;gap:10px;align-items:center;padding:10px 16px;cursor:pointer;list-style:none}.reference-entry summary::-webkit-details-marker{display:none}.reference-entry summary:hover{background:var(--surface-2)}.reference-entry[open] summary{background:#fffdf9}.entry-num{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint)}.entry-title{font-weight:650;font-size:13.5px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reference-entry summary svg{color:var(--vine)}.entry-body{padding:0 16px 14px 70px;color:var(--ink-soft);font-size:13px}.entry-actions{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}.course-hero,.module-hero{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:18px;align-items:stretch;margin-bottom:20px}.course-hero>div:first-child,.module-hero>div:first-child{position:relative;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(135deg,rgba(168,58,43,.1),transparent 36%),var(--card);box-shadow:var(--shadow);padding:20px 22px}.course-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:14px}.course-progress-card{border:1px solid var(--line);border-radius:var(--radius);background:linear-gradient(160deg,var(--basalt),#3a3028);box-shadow:var(--shadow);padding:18px;display:flex;flex-direction:column;justify-content:center;color:#fff8ea}.course-progress-card .kicker{color:#cdbca2}.course-progress-card strong{font-family:var(--font-display);font-size:36px;line-height:1.1;letter-spacing:0}.course-progress-card p{color:#d7c7af;font-size:12.5px;margin-top:8px}.course-progress-card .progress-track{background:#fffaf02e}.course-progress-card .progress-fill{background:var(--apricot)}.course-section{margin-top:18px}.course-section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:12px;margin-bottom:10px}.course-section-head h2{font-size:18px;line-height:1.2}.level-modules{display:grid;gap:14px}.level-module{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow);overflow:hidden;position:relative}.level-module-head{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;align-items:center;padding:16px 18px;background:linear-gradient(90deg,#fff6e8,var(--surface-2));border-bottom:1px solid var(--line-soft)}.level-module-head h2{font-size:18px;line-height:1.2;margin-top:3px}.level-module-head p{color:var(--ink-soft);font-size:13px;margin-top:3px;max-width:72ch}.level-badge{display:inline-flex;align-items:center;justify-content:center;width:34px;height:24px;border-radius:4px;background:var(--primary);color:#fff8ea;font-family:var(--font-mono);font-size:11px}.level-progress{text-align:right;color:var(--ink-faint);font-size:12px}.level-progress strong{display:block;color:var(--ink);font-size:22px;line-height:1.1}.module-list{display:grid}.module-card{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:13px;align-items:center;padding:14px 18px;color:inherit;text-decoration:none;border-bottom:1px solid var(--line-soft);transition:background .12s,box-shadow .12s}.module-card:hover{background:#fff6e8;box-shadow:inset 4px 0 0 var(--apricot)}.module-card.done svg{color:var(--vine)}.module-index{width:28px;height:28px;border-radius:4px;display:grid;place-items:center;border:1px solid var(--line);color:var(--ink-faint);font-family:var(--font-mono);font-size:11px}.module-main h3{font-size:15px;line-height:1.25;margin:1px 0 2px}.module-main p{color:var(--ink-soft);font-size:12.5px}.checkpoint-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;align-items:center;padding:15px 18px;background:var(--apricot-tint);border-top:1px solid var(--line-soft)}.checkpoint-card h3{font-size:15px;line-height:1.25;margin:1px 0 2px}.checkpoint-card p{color:var(--ink-soft);font-size:12.5px;max-width:72ch}.checkpoint-card.ready{background:var(--ok-bg)}.checkpoint-actions{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:7px}.course-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:18px;align-items:start}.course-panel,.course-side-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow)}.course-panel{padding:16px 18px}.course-steps{display:grid;gap:8px}.course-step{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:#fff8ec;cursor:pointer;transition:background .12s,border-color .12s,box-shadow .12s}.course-step:hover{border-color:var(--line-strong);background:#fff6e8}.course-step.done{background:var(--ok-bg);border-color:#d8e4cd}.course-step.active{border-color:var(--primary);background:#fffdf9;box-shadow:inset 3px 0 0 var(--primary)}.step-mark{width:28px;height:28px;border-radius:4px;display:grid;place-items:center;border:1px solid var(--line);background:var(--card);color:var(--ink-faint);font-family:var(--font-mono);font-size:11px}.course-step.done .step-mark{color:var(--vine);border-color:#c5d6b8}.step-copy .kicker{display:inline-flex;align-items:center;gap:5px}.step-copy h3{font-size:14.5px;line-height:1.25;margin-top:2px}.step-copy p{color:var(--ink-soft);font-size:12.5px}.step-actions{display:flex;align-items:center;justify-content:flex-end;gap:7px;flex-wrap:wrap}.step-actions .btn{position:relative;z-index:1}.btn.done-action{border-color:#cadfb9;color:var(--vine);background:var(--ok-bg)}.step-state{display:inline-flex;align-items:center;min-width:68px;justify-content:center;color:var(--ink-faint);font-family:var(--font-mono);font-size:10.5px;text-transform:uppercase;letter-spacing:.04em}.step-state.active{color:var(--primary)}.course-rail{position:sticky;top:20px;display:grid;gap:10px}.course-side-panel{padding:14px 15px}.course-side-panel h3{font-size:14.5px;line-height:1.25;margin:2px 0 5px}.course-side-panel p{color:var(--ink-soft);font-size:12.5px;margin-bottom:10px}.coverage-row{display:flex;align-items:center;gap:8px;padding:7px 0;border-bottom:1px solid var(--line-soft);color:inherit;text-decoration:none;font-size:12.5px}.coverage-row:last-child{border-bottom:none}.coverage-row:hover{color:var(--primary)}.module-workspace-layout{display:grid;grid-template-columns:390px minmax(0,1fr);gap:18px;align-items:start}.module-workspace-layout .course-panel{position:sticky;top:20px}.module-study-area{display:grid;gap:12px;min-width:0}.module-workspace-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow);overflow:hidden;position:relative}.workspace-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;padding:16px 18px;background:linear-gradient(90deg,#fff6e8,var(--surface-2));border-bottom:1px solid var(--line-soft)}.workspace-head .kicker{display:inline-flex;align-items:center;gap:5px}.workspace-head h2{font-size:20px;line-height:1.2;margin-top:2px}.workspace-head p{color:var(--ink-soft);font-size:13px;margin-top:4px;max-width:78ch}.workspace-body{display:grid;gap:12px;padding:18px}.workspace-body p{max-width:76ch}.workspace-actions{display:flex;justify-content:flex-start;flex-wrap:wrap;gap:8px;padding:0 18px 18px}.workspace-word-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:8px;padding:18px}.workspace-word{border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:#fff8ec;padding:8px 10px}.workspace-word .hy{display:block;font-size:16px;font-weight:650}.workspace-word span:last-child{color:var(--ink-soft);font-size:12.5px}.workspace-dialogue{padding:10px 8px 12px}.checkpoint-in-module{padding:18px;color:var(--ink-soft);font-size:13px}.module-context-strip{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:12px;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:12px 14px;box-shadow:var(--shadow)}.module-context-list{display:flex;flex-wrap:wrap;gap:5px;margin-top:6px}.hy-word{cursor:pointer;border-radius:2px;padding:0 1px;transition:background .12s,color .12s,border-color .12s;border-bottom:1px solid transparent;text-decoration-thickness:1px;text-underline-offset:3px}.hy-word:hover{color:var(--primary);background:#8f2f2414;border-bottom-color:#8f2f246b}.hy-word.known{border-bottom-color:#496f3d6b}.hy-word.known:hover{border-bottom-color:var(--vine)}.popover{position:fixed;z-index:60;width:min(360px,calc(100vw - 24px));background:var(--card);border:1px solid var(--line-strong);border-radius:var(--radius);box-shadow:0 18px 42px #231f1b33;padding:0;overflow:hidden;animation:pop-in .14s ease;font-family:var(--font-ui);font-size:13.5px;color:var(--ink)}@keyframes pop-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}.popover:after{content:"";display:block;height:5px;background:var(--tapestry-strip)}.popover-card{display:block;padding:15px 16px 14px;background:linear-gradient(180deg,rgba(255,255,255,.48),transparent 54%),var(--card)}.popover-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}.popover .word{display:block;font-family:var(--font-hy);font-size:25px;font-weight:750;line-height:1.08;letter-spacing:0;color:var(--primary)}.popover-caption,.lemma-label{display:inline-block;font-size:10.5px;font-weight:700;letter-spacing:.08em;line-height:1.2;color:var(--ink-faint);text-transform:uppercase}.lemma-line{display:flex;align-items:center;gap:6px;margin-top:6px;color:var(--ink-soft)}.popover .lemma{color:var(--primary-deep);font-family:var(--font-hy);font-size:15px;font-weight:650}.definition-block{display:block;border:1px solid var(--line-soft);border-left:3px solid var(--apricot);background:#fffdf7bd;padding:10px 11px;margin:0 0 11px}.popover .gloss{display:block;font-size:15px;font-weight:650;line-height:1.35;color:var(--ink)}.feature-list,.dict-hit{display:grid;gap:5px;margin-top:8px}.popover .feature{display:block;font-size:12.5px;color:var(--ink-soft);line-height:1.35;padding-left:13px;position:relative}.popover .feature:before{content:"";position:absolute;left:1px;top:.55em;width:5px;height:5px;background:var(--line-strong);transform:rotate(45deg)}.alt-analysis{display:grid;grid-template-columns:auto 1fr;column-gap:7px;row-gap:1px;border-top:1px solid var(--line-soft);padding-top:8px;margin-top:8px;color:var(--ink-soft);font-size:12.5px}.alt-label{grid-row:span 2;color:var(--ink-faint);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase}.alt-feature{color:var(--ink-faint)}.popover-note,.popover .unknown{display:block;border:1px solid var(--line-soft);background:#fffdf7bd;color:var(--ink-soft);padding:9px 10px;margin-bottom:10px}.popover-note.success{border-color:#496f3d47;background:var(--vine-tint);color:var(--vine)}.popover .meta{display:flex;gap:6px;margin-top:10px;flex-wrap:wrap;align-items:center}.popover .btn.small{min-height:28px;padding:4px 9px;font-size:12px}.popover .popover-primary{border-color:var(--primary);background:var(--primary);color:#fff8ea}.popover .chip.pos{padding:4px 7px;border-color:#1f5e702e}.chip{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:650;padding:3px 7px;border-radius:4px;border:1px solid transparent;color:var(--ink-soft);background:#fffaf09e;font-family:var(--font-ui);line-height:1.2}.chip.pos{color:var(--lapis);background:var(--lapis-tint)}.chip.conf-exact{color:var(--vine);background:var(--vine-tint)}.chip.conf-inflected{color:var(--gold);background:var(--apricot-tint)}.chip.cat{color:var(--primary);background:#f5d8cfb8}.chip.on{background:var(--primary);color:#fff8ea;border-color:var(--primary)}button.chip{cursor:pointer}button.chip:hover:not(.on),a.chip:hover{border-color:var(--line-strong);background:#fff6e8;color:var(--primary)}.input,textarea.input{width:100%;font-family:var(--font-ui);font-size:14px;padding:8px 11px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fffdf7;color:var(--ink);outline:none;transition:border-color .12s,box-shadow .12s}.input::placeholder{color:var(--ink-faint)}.input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #a83a2b1f}.input:disabled{background:var(--surface-2);color:var(--ink-faint)}textarea.input{line-height:1.6}.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;font-family:var(--font-ui);font-weight:600;font-size:13.5px;padding:7px 14px;border-radius:var(--radius-sm);border:1px solid var(--primary);background:var(--primary);color:#fff8ea;cursor:pointer;min-height:34px;transition:background .12s,border-color .12s,transform .12s,box-shadow .12s;text-decoration:none}.btn:hover:not(:disabled){background:var(--primary-deep);border-color:var(--primary-deep);transform:translateY(-1px);box-shadow:0 6px 14px #81291e29}.btn.ghost{background:transparent;color:var(--primary)}.btn.ghost:hover:not(:disabled){background:var(--primary-tint)}.btn.quiet{border-color:var(--line);background:#fffdf7;color:var(--ink-soft)}.btn.quiet:hover:not(:disabled){border-color:var(--line-strong);color:var(--ink);background:#fff6e8;box-shadow:0 5px 12px #33241614}.btn.quiet.on,.btn.quiet.active-action{border-color:var(--primary);color:var(--primary);background:var(--primary-tint)}.btn.small{font-size:12.5px;padding:5px 11px;min-height:30px}.btn:disabled{opacity:.45;cursor:default}.icon-btn{display:inline-grid;place-items:center;width:28px;height:28px;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fffdf7;color:var(--ink-soft);cursor:pointer;transition:border-color .12s,color .12s}.icon-btn:hover{border-color:var(--line-strong);color:var(--primary);background:#fff6e8}.icon-btn.fav{color:var(--gold)}.seg{display:inline-flex;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;background:#fffdf7}.seg button{font-family:var(--font-ui);font-weight:550;font-size:12.5px;padding:5px 12px;border:none;background:transparent;color:var(--ink-soft);cursor:pointer}.seg button+button{border-left:1px solid var(--line)}.seg button.active{background:var(--basalt);color:#fff8ea}.seg button:hover:not(.active){background:#fff6e8;color:var(--ink)}.seg button:disabled{opacity:.45;cursor:default}.content-hero,.notes-hero{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}.content-hero .page-lede,.notes-hero .page-lede{margin-top:6px;max-width:78ch}.content-workbench{display:grid;grid-template-columns:minmax(680px,1fr) minmax(340px,410px);gap:16px;align-items:start}.content-support-rail{position:sticky;top:20px;display:grid;gap:14px;max-height:calc(100vh - 40px);overflow:auto;padding-right:2px}.content-tool-panel,.editor-pane,.notes-composer,.note-group{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow);position:relative;overflow:hidden}.content-tool-panel{padding:14px}.content-tool-panel .course-section-head h2{font-size:18px;line-height:1.2}.content-tool-panel .course-section-head h3{font-size:14px;line-height:1.25}.backfill-levels{display:grid;gap:8px}.backfill-levels.compact{max-height:255px;overflow:auto;padding-right:2px}.backfill-level{border:1px solid var(--line-soft);border-radius:var(--radius-sm);overflow:hidden;background:var(--surface-2)}.backfill-level summary{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px;cursor:pointer;list-style:none;border-bottom:1px solid var(--line-soft)}.backfill-level summary::-webkit-details-marker{display:none}.backfill-level summary strong{font-family:var(--font-display);color:var(--primary);font-size:18px;line-height:1}.backfill-level summary span{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint)}.backfill-level button{display:block;width:100%;text-align:left;padding:9px 10px;border:none;border-bottom:1px solid var(--line-soft);background:var(--card);color:var(--ink);font:inherit;cursor:pointer}.backfill-level button:last-child{border-bottom:none}.backfill-level button:hover,.backfill-level button.active{background:var(--primary-tint)}.backfill-level button span{display:block;font-weight:650;font-size:13px;line-height:1.25}.backfill-level button small{display:block;color:var(--ink-faint);font-size:11.5px;line-height:1.35;margin-top:2px}.generator-divider{border-top:1px solid var(--line-soft);margin:14px 0}.content-kind-picker{width:100%;margin-bottom:14px}.content-kind-picker button{flex:1}.structure-editor{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;align-items:start}.editor-pane{padding:16px}.target-strip{display:flex;align-items:center;gap:8px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--surface-2);padding:7px 8px;margin-bottom:12px}.target-strip strong{flex:1;min-width:0;font-size:13px}.structure-json{font-family:var(--font-mono);font-size:11.5px;line-height:1.45}.structured-preview{border-top:1px solid var(--line-soft);margin-top:12px;padding-top:10px}.structured-output-panel{border-top:1px solid var(--line-soft);margin-top:14px;padding-top:14px}.structured-output-panel h3{display:flex;align-items:center;gap:7px;font-size:15px;line-height:1.25;margin-bottom:10px}.generated-additions .word-row{gap:8px;align-items:center;border-bottom:1px solid var(--line-soft);padding:8px 0}.generated-additions .word-row:last-child{border-bottom:none}.generated-additions .word-row .btn{flex:0 0 auto}.content-addition-groups{display:grid;gap:8px}.structure-workbench{display:grid;grid-template-columns:330px minmax(0,1fr);gap:16px;align-items:start}.structure-outline,.structure-detail{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow)}.structure-outline{position:sticky;top:20px;max-height:calc(100vh - 40px);overflow:auto}.structure-outline-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:14px;border-bottom:1px solid var(--line-soft);background:var(--surface-2)}.structure-outline-head h2{font-size:17px;line-height:1.2}.structure-tree{display:grid}.structure-tree details{border-bottom:1px solid var(--line-soft)}.structure-tree details:last-child{border-bottom:none}.structure-tree summary{list-style:none}.structure-tree summary::-webkit-details-marker{display:none}.structure-tree summary>button,.structure-sections button{width:100%;display:grid;grid-template-columns:28px minmax(0,1fr);gap:8px;align-items:center;border:none;background:transparent;color:var(--ink-soft);text-align:left;font:inherit;cursor:pointer}.structure-tree summary>button{padding:10px 12px;font-weight:650}.structure-tree summary.active>button,.structure-tree summary>button:hover,.structure-sections button.active,.structure-sections button:hover{background:var(--primary-tint);color:var(--primary)}.structure-tree summary span,.structure-sections span{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint)}.structure-sections{display:grid;padding:0 0 6px 28px}.structure-sections button{padding:7px 10px;font-size:12.5px}.structure-detail{padding:16px}.structure-toolbar,.structure-form-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.structure-toolbar{padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--line-soft)}.structure-toolbar h2{font-size:20px;line-height:1.2}.structure-editor-grid{display:grid;grid-template-columns:320px minmax(0,1fr);gap:14px;align-items:start}.structure-form-head{margin-bottom:12px}.structure-form-head h3{font-size:15px;line-height:1.25}.structure-detail label{display:block;margin:10px 0 4px;color:var(--ink-soft);font-size:12px;font-weight:650}.structure-json.tall{min-height:420px;resize:vertical}.notes-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:16px;align-items:start}.notes-composer{position:sticky;top:20px;padding:16px}.notes-list{display:grid;gap:12px}.notes-toolbar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}.notes-toolbar .grammar-search{flex:1;min-width:220px;max-width:420px}.note-group{overflow:hidden}.note-group-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;background:var(--surface-2);border-bottom:1px solid var(--line-soft)}.note-group-head span:last-child{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint)}.note-group-head h2{font-size:15px;line-height:1.25;margin-top:2px}.note-row{padding:12px;border-bottom:1px solid var(--line-soft)}.note-row:last-child{border-bottom:none}.note-source-line{display:flex;align-items:center;gap:7px;margin-bottom:8px;font-size:12.5px}.note-source-line a{font-weight:650;color:var(--lapis)}.note-row-actions{display:flex;justify-content:flex-end;gap:7px;margin-top:8px}.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px;background:var(--bg)}.auth-card{width:100%;max-width:400px}.auth-card .brand{text-align:center;margin-bottom:2px;font-size:22px;padding:0;color:var(--ink)}.auth-card .brand .hy{font-size:30px;color:var(--primary)}.auth-card .brand-sub{text-align:center;margin-bottom:22px;padding:0;color:var(--ink-faint)}.auth-card .card{box-shadow:inset 0 5px 0 var(--primary),var(--shadow)}.auth-tabs{display:flex;gap:4px;margin-bottom:16px;background:var(--surface-2);border:1px solid var(--line-soft);border-radius:var(--radius-sm);padding:3px}.auth-tabs button{flex:1;font-family:var(--font-ui);font-weight:600;font-size:13px;padding:6px;border-radius:4px;border:none;background:transparent;color:var(--ink-soft);cursor:pointer}.auth-tabs button.active{background:var(--card);color:var(--ink);box-shadow:var(--shadow)}.auth-field{margin-bottom:11px}.auth-field label{display:block;font-size:12.5px;font-weight:550;color:var(--ink-soft);margin-bottom:4px}.auth-divider{display:flex;align-items:center;gap:10px;color:var(--ink-faint);font-size:12px;margin:16px 0}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:var(--line)}.settings-layout{display:grid;grid-template-columns:190px minmax(0,1fr);gap:20px;align-items:start}@media(max-width:760px){.settings-layout{grid-template-columns:1fr}}.settings-nav{display:flex;flex-direction:column;gap:1px;position:sticky;top:20px}.settings-nav button{display:flex;align-items:center;gap:9px;font:inherit;font-size:13.5px;font-weight:500;text-align:left;padding:7px 10px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--ink-soft);cursor:pointer}.settings-nav button svg{color:var(--ink-faint)}.settings-nav button:hover{background:var(--surface-2);color:var(--ink)}.settings-nav button.active{background:var(--primary-tint);color:var(--primary)}.settings-nav button.active svg{color:var(--primary)}.settings-nav .signout{margin-top:12px;border-top:1px solid var(--line-soft);border-radius:0;padding-top:12px;color:var(--primary)}.settings-nav .signout svg{color:var(--primary)}.flashcard{perspective:1200px;max-width:480px;margin:0 auto}.flashcard-inner{position:relative;min-height:260px;border-radius:var(--radius);transform-style:preserve-3d;transition:transform .45s cubic-bezier(.4,.1,.2,1);cursor:pointer}.flashcard-inner.flipped{transform:rotateY(180deg)}.flash-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;border-radius:var(--radius);border:1px solid var(--line);background:linear-gradient(160deg,#fffdf7,var(--card));box-shadow:var(--shadow);padding:28px;text-align:center}.flash-face.back{transform:rotateY(180deg);border-color:var(--primary);box-shadow:inset 0 4px 0 var(--primary),var(--shadow)}.flash-face .big-hy{font-family:var(--font-hy);font-size:38px;font-weight:600;line-height:1.2}.flash-face .big-en{font-size:24px;font-weight:600}.flash-face .hint{color:var(--ink-faint);font-size:11px;letter-spacing:.08em;text-transform:uppercase}.grade-row{display:flex;gap:8px;justify-content:center;margin-top:20px}.grade{font-family:var(--font-ui);font-weight:600;font-size:13px;padding:7px 16px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--card);cursor:pointer;transition:border-color .12s,background .12s}.grade.again{color:var(--primary)}.grade.again:hover{border-color:var(--primary);background:var(--bad-bg)}.grade.hard{color:var(--gold)}.grade.hard:hover{border-color:var(--gold);background:#f8f4e7}.grade.good{color:var(--vine)}.grade.good:hover{border-color:var(--vine);background:var(--ok-bg)}.grade.easy{color:var(--lapis)}.grade.easy:hover{border-color:var(--lapis);background:#eef2f7}.practice-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:18px;align-items:start}.practice-summary{position:sticky;top:20px}.drill-row{display:flex;align-items:center;gap:11px;width:100%;text-align:left;font:inherit;padding:9px 12px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);cursor:pointer;transition:border-color .12s,background .12s;margin-bottom:5px}.drill-row:hover{border-color:var(--ink-faint)}.drill-row.on{border-color:var(--primary);background:var(--primary-tint)}.drill-row .box{width:17px;height:17px;border-radius:4px;border:1.5px solid var(--line);display:grid;place-items:center;color:#fff;flex-shrink:0;background:var(--card)}.drill-row.on .box{background:var(--primary);border-color:var(--primary)}.drill-row .drill-name{font-weight:600;font-size:13px}.drill-row .drill-blurb{font-size:12px;color:var(--ink-faint)}.drill-row .acc{margin-left:auto;font-family:var(--font-mono);font-size:11px;color:var(--ink-faint);white-space:nowrap}.quickstart{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px}.quickstart-card{display:flex;flex-direction:column;align-items:flex-start;gap:5px;font:inherit;text-align:left;padding:14px 16px;border-radius:var(--radius);border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);cursor:pointer;transition:border-color .12s}.quickstart-card:hover:not(:disabled){border-color:var(--primary)}.quickstart-card:disabled{opacity:.5;cursor:default}.quickstart-card svg{color:var(--primary)}.quickstart-card .qs-title{font-weight:650;font-size:14px}.quickstart-card .qs-sub{font-size:12px;color:var(--ink-faint)}.progress-track{height:5px;border-radius:3px;background:var(--line-soft);overflow:hidden;margin-bottom:16px}.progress-fill{height:100%;border-radius:3px;background:var(--primary);transition:width .3s ease}.q-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}.q-head{display:flex;align-items:center;gap:8px;padding:8px 18px;background:linear-gradient(90deg,#fff6e8,var(--surface-2));border-bottom:1px solid var(--line-soft);font-size:12px;font-weight:550;color:var(--ink-soft)}.q-body{padding:20px}.q-prompt{font-family:var(--font-hy);font-size:23px;font-weight:600;margin-bottom:3px}.q-detail{color:var(--ink-soft);font-size:13px;margin-bottom:14px}.option{display:block;width:100%;text-align:left;font-family:var(--font-ui);font-size:14.5px;padding:10px 14px;margin:6px 0;border-radius:var(--radius-sm);border:1px solid var(--line);background:#fffdf7;cursor:pointer;transition:border-color .12s,background .12s}.option .hy,.option.hy{font-size:15.5px}.option:hover:not(:disabled){border-color:var(--line-strong);background:#fff6e8}.option.correct{border-color:var(--vine);background:var(--ok-bg)}.option.wrong{border-color:var(--primary);background:var(--bad-bg)}.option:disabled{cursor:default}.order-word{font-family:var(--font-hy);font-size:15.5px;padding:6px 13px;margin:3px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--card);cursor:pointer;transition:border-color .12s;display:inline-block}.order-word:hover{border-color:var(--primary)}.order-slot{min-height:50px;border:1px dashed var(--line);border-radius:var(--radius-sm);padding:6px;margin:10px 0;background:var(--surface-2)}.feedback{margin-top:14px;padding:11px 14px;border-radius:var(--radius-sm);font-size:13.5px}.feedback.ok{background:var(--ok-bg);border:1px solid #c5d6b8}.feedback.no{background:var(--bad-bg);border:1px solid #e5c0ba}.score-bar{display:flex;gap:12px;align-items:center;margin-bottom:12px;color:var(--ink-soft);font-size:13px;flex-wrap:wrap}.score-bar strong{color:var(--ink);font-size:14px}.arm-kbd{margin-top:12px;-webkit-user-select:none;user-select:none}.arm-kbd-row{display:flex;justify-content:center;gap:3px;margin-bottom:3px}.arm-key{font-family:var(--font-hy);font-size:15px;min-width:32px;padding:6px 4px;border-radius:4px;border:1px solid var(--line);background:#fffdf7;cursor:pointer;transition:background .1s;display:inline-flex;align-items:center;justify-content:center;box-shadow:var(--shadow)}.arm-key:hover{background:#fff6e8}.arm-key:active{transform:translateY(1px)}.arm-key.wide{min-width:48px}.tutor-shell{display:flex;flex-direction:column;min-height:calc(100vh - 130px)}.chat-log{flex:1;display:flex;flex-direction:column;gap:10px}.chat-msg{max-width:76%;padding:10px 14px;border-radius:var(--radius);font-size:14px;line-height:1.6;white-space:pre-wrap}.chat-msg .hy{font-size:15px}.chat-msg.user{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:3px}.chat-msg.assistant{align-self:flex-start;background:var(--card);border:1px solid var(--line);border-bottom-left-radius:3px;box-shadow:var(--shadow)}.search-trigger{width:100%;font-family:var(--font-ui);font-size:13px;color:#cdbca2;padding:7px 10px;border-radius:var(--radius-sm);border:1px solid rgba(255,250,240,.16);background:#fffaf014;cursor:pointer;margin-bottom:14px;display:flex;align-items:center;gap:8px}.search-trigger:hover{border-color:#fffaf057;color:#fff8ea}.search-trigger kbd{margin-left:auto;font-family:var(--font-mono);font-size:10.5px;border:1px solid rgba(255,250,240,.18);border-radius:4px;padding:0 5px;background:#fffaf014}.search-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#231f1b7a;display:flex;justify-content:center;align-items:flex-start;padding:12vh 16px 0;animation:fade-in .12s ease}.search-box{width:100%;max-width:540px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:10px}.search-hits{margin-top:6px;max-height:50vh;overflow-y:auto}.search-hit{display:grid;grid-template-columns:auto auto 1fr;gap:9px;align-items:baseline;width:100%;text-align:left;font:inherit;font-size:13.5px;padding:8px 9px;border:none;border-radius:var(--radius-sm);background:transparent;cursor:pointer}.search-hit:hover,.search-hit.active{background:var(--surface-2)}.dialogue-line{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:18px;padding:8px 12px;border-radius:var(--radius-sm);align-items:baseline}.dialogue-line:nth-child(odd){background:#fff6e8}.dialogue-line .hy{font-size:15.5px}.dialogue-line .en{color:var(--ink-soft);font-size:12.5px}.dialogue-line .en.hidden-en{filter:blur(6px);cursor:pointer;transition:filter .2s}.dialogue-line .en.hidden-en:hover{filter:blur(0)}.roleplay-current{padding:14px;border:1px dashed var(--line);border-radius:var(--radius);margin-top:10px;background:var(--surface-2)}.reader-text{font-family:var(--font-hy);font-size:18px;line-height:2;white-space:pre-wrap}.drop-zone{border:1px dashed var(--line);border-radius:var(--radius);padding:20px;text-align:center;color:var(--ink-soft);font-size:13.5px;background:#fff8ec;transition:background .12s,border-color .12s}.drop-zone.over{background:var(--primary-tint);border-color:var(--primary)}.reader-workspace{max-width:1460px}.reader-hero{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:18px;margin-bottom:0}.reader-hero .page-title{font-size:clamp(31px,4vw,44px)}.reader-hero .page-lede{max-width:78ch;margin-top:6px}.reader-hero-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;justify-content:flex-end}.reader-hero-actions label.btn{cursor:pointer}.reader-docs-home{display:grid;gap:26px}.reader-template-strip{margin-inline:-38px;padding:22px clamp(18px,4vw,42px) 28px;background:linear-gradient(90deg,#1f5e7014,#c9843214),#f4f8fca8;border-top:1px solid rgba(183,154,115,.25);border-bottom:1px solid rgba(183,154,115,.25);transition:background .14s,box-shadow .14s}.reader-template-strip.over{background:linear-gradient(90deg,#1f5e7021,#c9843226),#fff8ecdb;box-shadow:inset 0 0 0 2px #8f2f2438}.reader-template-head{max-width:1100px;margin:0 auto 14px;display:flex;justify-content:space-between;gap:14px;align-items:baseline;color:var(--ink-faint);font-size:12.5px}.reader-template-grid{max-width:1100px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}.reader-template-card{display:grid;grid-template-rows:auto auto auto;gap:7px;align-content:start;min-height:230px;border:none;background:transparent;color:var(--ink);text-align:left;cursor:pointer}.reader-template-card:hover .template-preview{border-color:var(--primary);box-shadow:0 7px 20px #241c141f;transform:translateY(-2px)}.reader-template-card strong{font-size:14px;line-height:1.2}.reader-template-card>span:last-child{color:var(--ink-faint);font-size:12.5px}.template-preview{display:grid;place-items:center;aspect-ratio:.78;border:1px solid var(--line);border-radius:3px;background:linear-gradient(90deg,rgba(183,154,115,.12) 1px,transparent 1px) 0 0 / 22px 22px,linear-gradient(0deg,rgba(183,154,115,.1) 1px,transparent 1px) 0 0 / 22px 22px,#fffdf9;color:var(--primary);box-shadow:var(--shadow);transition:border-color .14s,box-shadow .14s,transform .14s}.plus-preview{background:linear-gradient(90deg,rgba(31,94,112,.09) 1px,transparent 1px) 0 0 / 22px 22px,linear-gradient(0deg,rgba(31,94,112,.08) 1px,transparent 1px) 0 0 / 22px 22px,#fff}.sample-preview,.ai-preview{font-family:var(--font-display);font-size:22px;font-weight:700}.reader-template-card.ai-story{cursor:default}.reader-template-card.ai-story .input{padding:8px 10px}.reader-template-card.ai-story .btn{width:max-content}.reader-file-browser,.reader-note-panel{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);box-shadow:var(--shadow);position:relative;overflow:hidden}.reader-file-browser:after,.reader-note-panel:after{content:"";display:block;height:5px;background:var(--tapestry-strip)}.doc-source{font-family:var(--font-mono);font-size:9.5px;letter-spacing:0;text-transform:uppercase;color:var(--primary);border:1px solid var(--line);background:#fffdf7;border-radius:var(--radius-sm);padding:2px 4px}.reader-start,.reader-empty-page{border:1px dashed var(--line);border-radius:var(--radius);background:#fff8ecb8;color:var(--ink-soft);text-align:center;padding:20px}.reader-start h2,.reader-empty-page strong{display:block;color:var(--ink)}.reader-empty-page span{display:block;font-size:12.5px;margin-top:3px}.reader-file-browser{max-width:1100px;width:100%;margin:0 auto;padding:0 0 24px;border:none;border-radius:0;background:transparent;box-shadow:none}.reader-file-browser:after{display:none}.reader-file-browser-head{display:flex;align-items:center;justify-content:space-between;gap:16px;border-bottom:none;padding-bottom:0;margin-bottom:16px}.reader-file-browser-head h2{font-family:var(--font-ui);font-size:18px;font-weight:650;line-height:1.15}.reader-folder-tabs{display:flex;flex-wrap:wrap;gap:6px;justify-content:flex-end}.reader-folder-tabs button{border:1px solid transparent;background:transparent;color:var(--ink-soft);border-radius:var(--radius-sm);padding:7px 10px;font-weight:650;cursor:pointer}.reader-folder-tabs button:hover,.reader-folder-tabs button.active{border-color:var(--line);background:#fffdf7;color:var(--ink)}.reader-file-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:22px}.reader-file-card{display:grid;gap:9px;border:none;background:transparent;color:var(--ink);text-align:left;padding:0;cursor:pointer;transition:transform .12s}.reader-file-card:hover{transform:translateY(-2px)}.reader-file-card strong{font-family:var(--font-ui);font-size:14.5px;line-height:1.25;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-page-preview{display:block;aspect-ratio:.78;border:1px solid var(--line);border-radius:3px;background:linear-gradient(90deg,rgba(183,154,115,.12) 1px,transparent 1px) 0 0 / 22px 22px,linear-gradient(0deg,rgba(183,154,115,.1) 1px,transparent 1px) 0 0 / 22px 22px,#fffdf9;box-shadow:var(--shadow);padding:24px 20px;overflow:hidden;transition:border-color .12s,box-shadow .12s}.reader-file-card:hover .reader-page-preview{border-color:var(--primary);box-shadow:0 8px 24px #241c141f}.reader-page-preview-text{display:-webkit-box;-webkit-line-clamp:9;-webkit-box-orient:vertical;overflow:hidden;color:var(--ink-soft);font-family:var(--font-hy);font-size:11px;line-height:1.65;white-space:pre-wrap}.reader-file-card-meta{display:flex;flex-wrap:wrap;gap:5px}.reader-file-card-meta span{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint);border:1px solid var(--line-soft);background:#fffdf7d1;border-radius:var(--radius-sm);padding:2px 5px}.reader-document-view{max-width:1540px}.reader-document-topbar{position:sticky;top:0;z-index:20;display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:14px;align-items:start;border:1px solid var(--line);border-radius:var(--radius);background:#fffaf0f0;box-shadow:var(--shadow);padding:12px;margin-bottom:12px;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.reader-document-title{min-width:0}.reader-document-toolbar{display:flex;align-items:center;gap:7px;flex-wrap:wrap;justify-content:flex-end}.reader-title-input{width:100%;min-width:240px;border:none;background:transparent;color:var(--ink);font-family:var(--font-display);font-size:25px;font-weight:700;line-height:1.15;outline:none}.reader-doc-meta{display:flex;flex-wrap:wrap;gap:5px;margin-top:7px}.reader-doc-meta span{font-family:var(--font-mono);font-size:10.5px;color:var(--ink-faint);border:1px solid var(--line-soft);background:#fffdf7bd;border-radius:var(--radius-sm);padding:2px 5px}.reader-doc-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.reader-read-selection-bar{position:sticky;top:84px;z-index:19;display:grid;grid-template-columns:minmax(180px,1fr) auto minmax(220px,360px) auto auto;gap:9px;align-items:center;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2);box-shadow:var(--shadow);padding:9px 10px;margin-bottom:12px}.reader-full-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;align-items:start}.reader-full-sheet{min-width:0}.reader-page-surface{min-height:560px;padding:34px clamp(20px,5vw,72px) 54px;background:linear-gradient(90deg,rgba(183,154,115,.2) 1px,transparent 1px) 0 0 / 32px 32px,linear-gradient(0deg,rgba(183,154,115,.16) 1px,transparent 1px) 0 0 / 32px 32px,#fffaf0}.reader-page-surface.full{min-height:calc(100vh - 180px);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.reader-page-surface .reader-text{max-width:980px;margin:0 auto;font-size:20px;line-height:2.12;-webkit-user-select:text;user-select:text}.reader-editor{width:100%;min-height:520px;border:none;border-bottom:1px solid var(--line);resize:vertical;outline:none;background:linear-gradient(90deg,rgba(183,154,115,.18) 1px,transparent 1px) 0 0 / 32px 32px,linear-gradient(0deg,rgba(183,154,115,.14) 1px,transparent 1px) 0 0 / 32px 32px,#fffaf0;color:var(--ink);font-family:var(--font-hy);font-size:19px;line-height:1.85;padding:28px clamp(18px,4vw,58px)}.reader-editor.full{min-height:calc(100vh - 180px);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.selection-preview{color:var(--ink-soft);font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.reader-swatches{display:flex;gap:5px}.reader-swatch{width:24px;height:24px;border-radius:var(--radius-sm);border:1px solid var(--line);cursor:pointer}.reader-swatch.active{outline:2px solid var(--basalt);outline-offset:2px}.reader-swatch.apricot,.reader-highlight.apricot{background:#c984323d}.reader-swatch.lapis,.reader-highlight.lapis{background:#1f5e702e}.reader-swatch.vine,.reader-highlight.vine{background:#496f3d33}.reader-swatch.pomegranate,.reader-highlight.pomegranate{background:#8f2f242e}.reader-highlight{border-radius:2px;box-decoration-break:clone;-webkit-box-decoration-break:clone;padding:1px 3px;color:inherit}.reader-highlight.apricot{box-shadow:inset 0 -2px #c984327a}.reader-highlight.lapis{box-shadow:inset 0 -2px #1f5e7066}.reader-highlight.vine{box-shadow:inset 0 -2px #496f3d6b}.reader-highlight.pomegranate{box-shadow:inset 0 -2px #8f2f246b}.reader-document-notes{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;max-width:980px;width:100%;margin:0 auto}.reader-note-panel{padding:13px}.reader-note-panel:after{margin:13px -13px -13px}.reader-action-grid{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-bottom:10px}.reader-action-grid .btn:nth-child(3){grid-column:span 2}.reader-annotations{display:grid;gap:9px;margin-top:10px}.reader-note{border:1px solid var(--line-soft);border-left:3px solid var(--apricot);border-radius:var(--radius-sm);background:#fffdf7;padding:9px}.reader-note.lapis{border-left-color:var(--lapis)}.reader-note.vine{border-left-color:var(--vine)}.reader-note.pomegranate{border-left-color:var(--primary)}.reader-note-quote{font-family:var(--font-hy);font-size:13.5px;line-height:1.45;color:var(--ink)}.reader-note p{color:var(--ink-soft);font-size:12.5px;line-height:1.45;margin-top:6px}.reader-translation{white-space:pre-wrap;line-height:1.55;margin-top:9px}.reader-start{grid-column:1 / -1;display:grid;gap:10px;justify-items:center;align-content:center;min-height:520px}.word-row{display:flex;align-items:center;gap:11px;padding:8px 2px;border-bottom:1px solid var(--line-soft);font-size:13.5px}.word-row:last-child{border-bottom:none}.word-row .w-hy{font-family:var(--font-hy);font-size:16px;font-weight:600;min-width:120px}.word-row .w-en{color:var(--ink-soft);font-size:13px;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.word-row .actions{display:flex;gap:5px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.spread{justify-content:space-between}.muted{color:var(--ink-faint);font-size:12.5px}.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin:14px 0}.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;text-align:center;box-shadow:inset 0 3px #a83a2b14}.stat .n{font-family:var(--font-display);font-size:22px;font-weight:650;color:var(--ink)}.stat .l{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-faint)}.dash-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}.dash-grid.three{grid-template-columns:1fr 1fr 1fr}@media(max-width:1000px){.dash-grid.three{grid-template-columns:1fr 1fr}}@media(max-width:760px){.dash-grid,.dash-grid.three{grid-template-columns:1fr}}@media(max-width:900px){.grammar-hero,.grammar-detail-head,.content-hero,.notes-hero,.reader-hero{flex-direction:column;align-items:stretch}.reader-full-layout{grid-template-columns:1fr}.reader-document-notes{position:static;max-height:none}.reader-template-strip{margin-inline:-14px}.reader-template-head{flex-direction:column;gap:4px}.reader-read-selection-bar{grid-template-columns:1fr;top:0}.reader-document-topbar{position:static;grid-template-columns:1fr}.reader-document-toolbar{justify-content:flex-start}.content-workbench,.structure-editor,.structure-workbench,.structure-editor-grid,.notes-layout{grid-template-columns:1fr}.content-support-rail,.structure-outline,.notes-composer{position:static;max-height:none}.course-hero,.module-hero,.course-detail-layout,.module-workspace-layout,.module-context-strip{grid-template-columns:1fr}.course-rail,.module-workspace-layout .course-panel{position:static}.curriculum-topic-row{grid-template-columns:12px minmax(0,1fr)}.stage-controls,.curriculum-topic-actions{grid-column:2 / -1;justify-content:flex-start}.grammar-detail-layout{grid-template-columns:1fr}.grammar-toc{position:static;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}.reference-layout{grid-template-columns:1fr}.reference-nav{position:static;display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr))}}@media(max-width:560px){.reader-title-input{min-width:0;font-size:22px}.reader-page-surface{padding:22px 14px 44px}.reader-page-surface .reader-text,.reader-editor{font-size:17px}.reader-doc-actions,.reader-hero-actions{justify-content:flex-start}.course-hero>div:first-child,.module-hero>div:first-child,.course-panel{padding:14px}.level-module-head,.checkpoint-card,.course-step,.module-card{grid-template-columns:1fr;align-items:start}.workspace-head{flex-direction:column}.editor-pane,.content-tool-panel,.notes-composer,.note-row{padding:12px}.content-kind-picker{display:grid;grid-template-columns:1fr}.content-kind-picker button+button{border-left:none;border-top:1px solid var(--line)}.stage-controls{width:100%}.stage-controls button{flex:1;min-width:0}.curriculum-topic-row{grid-template-columns:1fr;gap:8px}.curriculum-stage-dot{display:none}.stage-pill,.stage-controls,.curriculum-topic-actions{grid-column:auto}.curriculum-topic-actions{justify-content:flex-start}.level-progress,.checkpoint-actions,.step-actions{justify-content:flex-start;text-align:left}.course-progress-card strong{font-size:30px}.reference-chapter-head{grid-template-columns:1fr}.reference-entry summary{grid-template-columns:38px minmax(0,1fr) auto;padding:10px 12px}.entry-body{padding:0 12px 13px}.grammar-section{padding:14px}.grammar-section-head{flex-direction:column}.section-tools{justify-content:flex-start;width:100%}.section-tools .btn{flex:1}.example{grid-template-columns:1fr;gap:3px}}.prog-row{display:flex;justify-content:space-between;align-items:baseline;margin-top:8px}.prog-label{font-size:13px;color:var(--ink-soft)}.prog-num{font-family:var(--font-mono);font-size:11.5px;color:var(--ink-faint)}.box-dot{width:10px;height:10px;border-radius:50%;background:var(--line);border:1px solid var(--card);box-shadow:0 0 0 1px var(--line);flex-shrink:0}.wotd-link{display:block;color:inherit;text-decoration:none;padding:4px 0 7px;margin-bottom:4px}.wotd-link:hover .wotd-hy{color:var(--primary);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}.wotd .wotd-hy{display:block;font-family:var(--font-hy);font-size:30px;font-weight:650;line-height:1.2;margin-bottom:1px}.fade-in{animation:fade-in .25s ease}@keyframes fade-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}.spinner{display:inline-block;width:15px;height:15px;border:2px solid var(--line);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.ai-drawer{position:fixed;top:0;right:0;bottom:0;z-index:110;width:min(400px,92vw);background:var(--card);border-left:1px solid var(--line);box-shadow:var(--shadow-md);display:flex;flex-direction:column;animation:ai-in .18s ease}@keyframes ai-in{0%{transform:translate(24px);opacity:0}to{transform:none;opacity:1}}.ai-drawer-head{display:flex;align-items:center;gap:8px;padding:12px 14px;border-bottom:1px solid var(--line-soft);background:linear-gradient(90deg,var(--basalt),var(--basalt-2));color:#fff8ea}.ai-drawer-head .chip{background:#fffaf01f;color:#f0b45e}.ai-drawer-title{font-weight:650;font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ai-drawer-log{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}.ai-drawer-log .chat-msg{max-width:92%}.ai-drawer-input{display:flex;gap:8px;padding:12px 14px;border-top:1px solid var(--line-soft)}.note-block{margin-top:8px;padding:10px 12px;border:1px solid #e1ca89;background:var(--apricot-tint);border-radius:var(--radius-sm);width:100%}.note-label{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;font-weight:650;color:var(--gold);text-transform:uppercase;letter-spacing:.05em}.forms-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:6px;margin-top:8px}.form-cell{padding:6px 9px;border:1px solid var(--line-soft);border-radius:var(--radius-sm);background:var(--surface-2)}.tutor-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:18px;align-items:start}@media(max-width:900px){.tutor-layout{grid-template-columns:1fr}.tutor-list{order:2;max-height:200px}.tutor-chat{height:60vh}}.tutor-list{position:sticky;top:20px;max-height:calc(100vh - 220px);overflow-y:auto;padding-right:4px}.tutor-item{display:flex;align-items:center;gap:4px;border-radius:var(--radius-sm);padding:2px 2px 2px 0}.tutor-item.active{background:var(--primary-tint)}.tutor-item-btn{flex:1;min-width:0;text-align:left;font:inherit;font-size:13px;padding:6px 9px;border:none;background:transparent;color:var(--ink-soft);cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-radius:var(--radius-sm)}.tutor-item.active .tutor-item-btn{color:var(--primary);font-weight:600}.tutor-item:hover .tutor-item-btn{color:var(--ink)}.tutor-item .icon-btn{border:none;opacity:0}.tutor-item:hover .icon-btn{opacity:1}.tutor-chat{display:flex;flex-direction:column;height:calc(100vh - 220px);min-height:380px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);position:relative;overflow:hidden}.tutor-chat .chat-log{overflow-y:auto;min-height:0}.dict-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:16px;align-items:start}@media(max-width:900px){.dict-layout{grid-template-columns:1fr}.dict-list{max-height:260px}}.dict-list{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px;max-height:calc(100vh - 300px);min-height:200px;overflow-y:auto;position:sticky;top:20px}.dict-list-item{display:flex;align-items:baseline;gap:7px;width:100%;text-align:left;font:inherit;font-size:13.5px;padding:7px 9px;border:none;border-radius:var(--radius-sm);background:transparent;cursor:pointer;color:var(--ink)}.dict-list-item:hover{background:var(--surface-2)}.dict-list-item.active{background:var(--primary-tint);box-shadow:inset 3px 0 0 var(--primary)}.dict-list-item.active .hy{color:var(--primary)}.dict-list-item .hy{font-size:15px}.dict-list-gloss{color:var(--ink-faint);font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0}.dict-list-item .dot{width:6px;height:6px;border-radius:50%;background:var(--primary);flex-shrink:0}.dict-article-pane{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px 28px 28px;min-height:400px;position:relative;overflow:hidden}.dict-article{max-width:640px}.article-head{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;border-bottom:2px solid var(--primary);padding-bottom:12px}.article-word{font-family:var(--font-hy);font-size:36px;font-weight:700;line-height:1.15;margin:0}.article-meta{display:flex;align-items:center;gap:8px;margin-top:4px;flex-wrap:wrap}.article-ipa{font-family:var(--font-mono);font-size:13px;color:var(--ink-soft)}.article-section{padding:14px 0 4px;border-bottom:1px solid var(--line-soft)}.article-section:last-child{border-bottom:none}.article-pos{font-style:italic;color:var(--ink-soft);font-size:13.5px;font-weight:550}.article-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);margin:12px 0 4px}.course-block{background:var(--primary-tint);margin-top:12px;border-radius:var(--radius-sm);padding:10px 14px;border-bottom:none;border-left:4px solid var(--primary)}.sense-list{margin:6px 0 0 22px;display:flex;flex-direction:column;gap:8px;font-size:14px}.sense-list li::marker{color:var(--ink-faint);font-weight:600}.sense-tag{font-size:11px;font-style:italic;color:var(--gold);margin-left:7px}.sense-example{margin:3px 0 0 4px;padding-left:10px;border-left:2px solid var(--line);font-size:13.5px}.sense-example .hy{font-size:14.5px}.sense-example-en{color:var(--ink-faint);font-style:italic}.article-rels{margin-top:8px;font-size:13.5px}.rel-link{font:inherit;font-size:14px;border:none;background:none;color:var(--lapis);cursor:pointer;padding:0;text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:2px}.rel-link:hover{text-decoration-color:var(--lapis)}.alpha-strip{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:16px}.alpha-btn{min-width:30px;padding:4px 6px;border-radius:var(--radius-sm);border:1px solid var(--line);background:var(--card);font-size:14px;cursor:pointer;transition:border-color .12s,background .12s}.alpha-btn:hover{border-color:var(--ink-faint)}.alpha-btn.on{background:var(--primary);color:#fff;border-color:var(--primary)}.dict-detail{border-top:1px solid var(--line-soft);padding-top:10px;margin-top:8px}.sense-list{margin:8px 0 0 20px;display:flex;flex-direction:column;gap:7px;font-size:13.5px}.sense-list .example{margin-left:-8px}.menu-btn{display:none}.drawer-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:120;background:#201d1866;animation:fade-in .12s ease}.drawer{position:fixed;top:0;bottom:0;left:0;z-index:121;width:min(300px,84vw);background:linear-gradient(135deg,var(--basalt),var(--basalt-2));border-right:1px solid var(--line);box-shadow:var(--shadow-md);padding:18px 14px;overflow-y:auto;animation:drawer-in .18s ease;display:flex;flex-direction:column}@keyframes drawer-in{0%{transform:translate(-24px);opacity:0}to{transform:none;opacity:1}}@media(max-width:900px){.menu-btn{display:inline-grid}}.mobile-nav{display:none}@media(max-width:900px){body:before{display:none}.shell{flex-direction:column}.sidebar{width:100%;height:auto;position:static;padding:10px 14px;flex-direction:row;align-items:center;gap:10px;border-right:none;border-bottom:1px solid #3b3129;overflow:visible}.sidebar .nav,.sidebar .brand-sub,.sidebar-account{display:none}.sidebar .search-trigger{width:auto;margin:0 0 0 auto}.sidebar .search-trigger kbd{display:none}.brand{font-size:15px;padding:0}.brand .hy{font-size:16px;display:inline;margin-right:7px}.main-wrap{margin-left:0}.main{padding:16px 14px 92px}.hero{flex-direction:column;align-items:stretch;padding:16px;gap:14px}.hero-left{gap:14px}.hero-title{font-size:22px}.hero-actions .btn.big{flex:1}.card{padding:13px 14px}.q-body{padding:14px}.path-row{padding:11px 12px;gap:10px}.path-sub{white-space:normal}.word-row{flex-wrap:wrap}.page-title{font-size:21px}.example,.dialogue-line{grid-template-columns:1fr;gap:3px}.chat-msg{max-width:92%}.popover{width:min(330px,calc(100vw - 24px))}.arm-key{min-width:27px;font-size:13.5px;padding:6px 2px}.practice-layout{grid-template-columns:1fr}.practice-summary{position:static}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:90;background:#fff8ea;border-top:1px solid var(--line);padding:5px 4px calc(5px + env(safe-area-inset-bottom));justify-content:space-around}.mobile-nav a{display:flex;flex-direction:column;align-items:center;gap:2px;text-decoration:none;color:var(--ink-faint);font-size:10px;font-weight:550;padding:4px 9px;border-radius:var(--radius-sm)}.mobile-nav a.active{color:var(--primary);background:var(--primary-tint)}}.dict-notfound{padding:48px 32px;display:flex;flex-direction:column;align-items:flex-start;gap:10px;color:var(--ink-soft)}.dict-notfound>svg{color:var(--ink-faint)}.notfound-title{font-size:20px;font-weight:650;color:var(--ink);margin:0}.notfound-hint{max-width:52ch;line-height:1.55}.notfound-result{margin-top:6px;padding:14px 16px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface-2, #faf9f5);min-width:min(360px,100%)}.notfound-hy{font-family:var(--font-hy);font-size:26px;font-weight:700;color:var(--ink);background:none;border:none;padding:0;cursor:pointer;margin-bottom:6px}.notfound-hy:hover{color:var(--primary)}